Safety electric-circuit system.



W. BOLGBR. SAFETY ELECTRIC CIRCUIT SYSTEM.

APPLICATION FILED APR. 24, 1914.

Patented Nov. 3, 1914.

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Specification of Letters Patent.

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TY ELECTZELICFCI'EEGU'IT SYSTEM.

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l at :1 States, and ,n. resident Mngsupoir udson, in the county of tester end State of New York, have ted it new end improved Safety Elem ircnlt System, of which the following yll, clear, and exact description.

invention relates to safety appliances for mitoinobilcs or the like, and has particuitll' rcicrcnce to the provision of n peculiar err: gerccnt of electric circuit and a movublc bolt moons for controlling the eliect of such circuit or system for various purposes hereinuftcr more fully set forth.

More specifically stated, I provide a he controlled movable lock bolt having on cue 1 cnd. a bridge adopted to connect two adjacontuct springs, each pair of springs vlug; incircuit with a single battery and being associated with any usual or well known ignition controlling switch mounted upon the dashboard, or the like, of the vehicle, whereby, when the vehicle is left by s person in chnrge in locked condition with a ignition switch open, a stranger nttemptstart the vehicle will first turn the ch into operatio position, causing the oundingr of an audible "alarm and without o1 uble to start the engine because of the in the ignition circuit.

The ioregoing and other objects of the inv' lon will hereinafter be more fully der Md and claimed and illustrated in the forming a part of this specification in which like characters of reference indictcorresponding ports in all the views,

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3, lure l is a perspective view of the preici ii structure of the movable bolt, a portion of the casing therefor being broken army; and Fig. 2 is a diagram of the wiring end several connections above referred to.

The several parts of the device may be madcoi any suitable materials, and the relative sizes and proportions, as well as the general design of the mechanism, may be varied a considerable "extent without depcrting "urn spirit of the invention hereinafter nun-c illy set "forth and specifically claimed.

fill it show on internal combustion err re, and st 11 is a battery having conncctin wires 155, 13 end 14: connecting the same wi' :hc engine.

'u in illustration of at common type or? switch for making or breaking the ignition circuit just referred to, and 16 is a spark coil in said circuit.

At 17 I show u pair of spaced contact springs to which the wires 13 and 14 are connected. These springs 17 are ada itcd to be connected electrically by moons o a bridge the engine. An auxiliary circuit comprises wires 20 and QI'connectcd to another air of contact springs 22 normally space from each other. The wire 20 is associated with the pivoted switch 15 and makes connection thcrcthrough to the battery when the switch is in operating position, as shown in Fig.2. At any suitable place in the auxiliary circuit, us, for instance, in the line oi the wire 21, is arranged an audible alarm 23 of any suitable character. The contuct s rings 22 are adapted to be connected by a bridge 24 secured through a block of insulation 25 to the bolt 19. The two bridges l8 and 24: may obviously be arranged in many different Ways upon the bolt 19, and the bolt likewise may be of any suitable construction and movable in any desired manner. I show, however, for convenience, a slidable through c. lockcasing 26, the position or movement of the bolt being controlled by means of u key applicdat 27, the only ex posed portion of the lock mechanism.

follows: With the ports arranged as shown in Fig. 2 infull lines, the sparking devices willbe understood as being active and the engine running, the circuit from the battery being through the switch 15, wire 13, contact 17 and brid e 18, and thence through the wire 14 to the engine, the wire 12 being a ground to the engine casing. The circuit through theauxiliary lines will at this time be broken because of the spaced contacts 22. When the motor is stopped, the operator will shift the switch 15 to neutral position as usual, and by means of his key will shift the bolt 19 so as to break the contact between the contact sprin s 17' and close the circuit by means of the ridge 24 between the contacts 22. Any stronger, therefore, attempting to start the motor while the device is set as just described, by turning the switch 15 to operating position, will corrnlcte an active circuit through the wires 20 and 21 and alarm 23', causing the alarm to sound. Since tlio position of the bolt 19, as just dcscribecl, is such that the contacts 17 are 18 insulated from but carried by a lock bolt" l9 when the device is for operation of bolt operating The operation may be briefly described as,

Patented Nov. 3, 1914. v

spaced, such operation of the stranger will be ineit'ective to start the motor. The alarm will continue sounding until the switch 15 is removed from the normal operating position or until the person in authority shifts the bolt to break the contact at the bridge 24:.

The term battery as used herein is to be understood as being typical of any suitable source of electrical energy and is not to be interpreted in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. The herein described safety system comprising the combination of a battery, ,a main circuit leading from the battery and including a main switch, said circuit hav-.

ing a pair oi spaced contacts, an auxiliary circuit leading from the battery and said main switch and including an audible alarm and a. .pair of spaced contacts, a member inovably relatively to said pairs of contacts,

and a pair of connecting members carried 1 by said member adapted to complete the i, 1 i eas circuit to said pairs of contacts in alternation.

2. The combination of a battery, an ignition switch associated therewith, a main aircuit leading from the battery and switch and including a pair. of spaced contacts, an auxiliary circuit leading from the battery and ignition switch and including an audible alarm, said auxiliary circuit also including a air of spaced contacts, and a key controlled lock arranged between the two pairs of spaced contacts, said lock including a slidable bolt and a pair of bridges carried by the bolt adapted to connect the spaced contacts in alternation depending upon the position of the bolt, substantially as set forth. 7

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM BOLGER. l/Vitnesses Gno. L. Brianna, P. D. RoLLHAUs. 

